add contribution to OScommerce site

I need a OScommerce contrib installed. It will need to be updated and tested on my server.

Quantity Price Breaks Per Product

[url removed, login to view],1242

I'm only looking for bids from developers that can have extensive prior experience with OScommerce. Developer needs to ensure that the contribution functions properly, does not interefere or cause conflicts with currently installed contribs, and do not cause any other bugs or errors. I would like some brief documentation of the work for reference, as we will likely add additional modules in the future. Thanks!